<!DOCTYPE html>
<body>
<style>
.target {
  width: 100px;
  height: 100px;
  background-color: black;
  display: inline-block;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/interpolation-test.js"></script>
<script>
assertInterpolation({
  property: 'widows',
  from: '10',
  to: '20'
}, [
  {at: -3.0, is: '1'},
  {at: -2.5, is: '1'},
  {at: -0.5, is: '5'},
  {at: 0, is: '10'},
  {at: 0.3, is: '13'},
  {at: 0.6, is: '16'},
  {at: 1, is: '20'},
  {at: 1.5, is: '25'}
]);
</script>
